Like i stated before, the 2 pictures i showed is from 1 owner cars with original master brake cylinders and like Alan stated one of them have been painted but NOT switched out, i have seen more aar cars with this style of master cylinder. There is also aar/ ta cars with unpainted 171 master cylinders & boosters from factory even if all should have been painted as a assembly from the factory.
Enough said.
If someone is intrested here is some more details for these cars: White lining on the upper radiator hose, wide tape on the right taillight housing (all barracudas), Dark red inspection marks on studs for duck tail spoiler, blue inspection marks on hood hinge bolts ( has been seen on both t/a &aar cars--But was not applied on all cars from factory).